Home / 2,507.09-3,459.38-1,388.07

Finding the Fourth Proportional to 2,507.09, 3,459.38 and 1,388.07

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Solution

The fourth proportional to 2,507.09, 3,459.38 and 1,388.07 is: 1,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.09 : 3,459.38 = 1,388.07 : x
  2. Step 2: Convert to fraction form
    2,507.09/3,459.38 = 1,388.07/x
  3. Step 3: Cross multiply
    2,507.09x = 3,459.38 × 1,388.07
  4. Step 4: Simplify right side
    2,507.09x = 4,801,854.66
  5. Step 5: Solve for x
    x = 4,801,854.66/2,507.09
  6. Step 6: Final answer
    x = 1,915.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.